This is a single multi purpose gimmick that will allow you to perform absolute miracles.

Effect

From
a regular deck you remove the two RED 9’s and the two BLACK queens, the
queens are given to the spectator to hold, you SHOW them you only have
the two RED 9’s, Visually the red 9’s change into the two black queens.
They look in their hand they are holding the two RED ACES.

A
stunning principle, the cards can be tossed onto the table and your
hands are empty, the full cards are shown both back and front no
special printing. Easy to do, but looks impossible. Also you can
perform montes, sandwich effects, switches etc.